NICREW Aquarium Internal Filter, Submersible Power Filter with Multiple Function, Aeration System with Sponge Filter for Fish Tanks 10-20 Gallon, 100 GPH, 7W

I’ve been using this small internal filter for a few weeks in my 5 gallons tank and it does a good job. It’s compact and easy to set up, and doesn’t take up too much space inside my aquarium. The flow is gentle enough for my fishes but still keeps the water moving and super clear. It runs pretty quietly too, which is a big plus, but it is not completely silent either. The only thing to note is that you’ll need to clean the sponge fairly often since it’s small, but that’s expected with a filter this size. Overall, it’s a reliable little filter for small tanks. Great value for money.

Works great for my 5.5 Gallon tank, I actually modified it some in which then it works even better, inside the filter is a plastic basket that holds a small pouch of carbon, the basket has small holes, so I actually used the Fluval Zeo-Carb loose in there, it is big enough that nothing escapes! Works great! Then I trashed the little pre filter that comes with this, I felt it had large pores which let a lot through, and I got the Fluval Phosphate filters, and I cut them to size and put them as the pre filter, I think it makes it one of the most efficient filters I've ever had, and it SUPER QUITE I love that if I keep it just slightly above the water as it sprays from the long attachment it creates some bubbles, enough that my guppies are super happy, which is good because typically bubblers are very loud.

I bought this filter at the beginning of January, so I’ve been using it for almost 3 months now. Overall, I’m really happy with it and I feel like it was a great upgrade for my tank. The filter feels like good quality and it has two types of filtration that work really well together. One is a sponge that catches most of the dirt and debris, and the other one is like a bag with filter media that helps clean the water even more. Together they do a really good job. Before this, I had a waterfall filter that came built into a rock decoration with my tank, and honestly it never worked properly. The water was always dirty no matter what I did. After switching to this filter, I immediately noticed a huge difference. It only took about 15 minutes after turning it on for my tank water to look clear again. This filter is rated for 20 to 40 gallon tanks, and mine is 20 gallons, so it fits perfectly and has more than enough power to keep everything clean. The only downside is that it does make some noise, which can be a little noticeable at night. Also, I had some bad luck because the replacement piece for the motor propeller came broken, so that’s why I’m not giving it a full 5 stars. Other than that, it’s a really good filter and I would still recommend it. It keeps the water very clean and works exactly as expected. Also, my turtle actually loves it and likes to sit under the water flow, it even looks like she’s dancing when the water hits her shell.

I recently purchased the filter for my 10-gallon aquarium, and after a few weeks of use, I feel compelled to share my thoughts on this compact device. As someone who values both functionality and tranquility in my fishkeeping experience, I've found this filter to be a mixed bag of brilliance and overpowering performance. **Pros:** 1. **Compact Design**: The size of this filter is truly noteworthy. It fits seamlessly behind my aquarium decor, allowing for unobstructed views of my aquatic inhabitants. 2. **Whisper-Quiet Operation**: One of the standout features of this filter is its near-silent operation. I often forget it’s even running, which is fantastic since it’s in my main living room. However, if the bubblers cap is removed It will make noises so I wouldn’t recommend doing that. 3. **Easy Installation and Maintenance**: Setting up the filter was a breeze. The instructions were clear, and it took no time to have it up and running. Cleaning and changing the filter is straightforward, which is essential for someone with a busy schedule. **Cons:** 1. **Too Powerful for Small Tanks**: While the filter’s strength may be beneficial for larger aquariums, I found it to be a bit too powerful for anything under a 10-gallon setup. The water flow is strong enough that it creates a significant current, which can be distressing for smaller fish and plants. I've had to adjust the outflow angle to try to minimize the turbulence, but it still feels excessive in some parts of the tank. 2. **Limited Flow Control**: I wish there were a more effective way to regulate the flow rate. The filter operates at one speed, which can be overwhelming in a small tank that needs gentler filtration. Overall, the filter is a fantastic choice for those who need a small and quiet filtration solution, but potential buyers should be mindful of its potency. If you're using it in a larger aquarium or are keeping more robust species that can handle higher flow, this filter might be a perfect fit. For those with delicate fish or plants, I recommend considering whether the strong current can be adequately mitigated before making this purchase. Despite its power, I’m still pleased with my overall experience and will be keeping it in my setup for now.

A little strong for a 10 gallon, but surprisingly good. I would use it more for a 20 gallon unless you need a lot of water movement in your smaller tank. Keeps the water clear and the sponge will hold beneficial bacteria. It's quiet and the suction cups are good and hold it in place very well.

Works great in my 2.5 gal pico reef tank jar, has room in the top where the charcoal goes for some bio media and circulates the water enough to keep the cyano at bay. Macros and zoas like it.

I bought this filter in June 2025, and this filter works fantastic so far for my 5 gallon betta tank (I got the mini filter 3.5w)! The tank stays very clean and oxygenized without stressing my betta out, since the waterfall-like option gives a gentle, not overly disruptive water flow that I can adjust the position as needed. My old filter that came with the tank I found was too stressful and my late betta had a hard time swimming through, but my current betta seems to swim around this one with ease. I do have the water flow streaming onto a rock which helps too (see pic). It's very easy to set up as you just put it together and plug it in, no additional pumps required. Overall, this filter is way cheaper than my local pet stores and works much better without being overpowering for my betta. If it were to break, I would definitely buy this again.

Bad product l. It worked for 12 hours and stopped completely. Unfortunately I could not return it as I passed the return window. Don’t buy it

El artículo es muy chico, se tapa constantemente el servicio que da no ca de acuerdo a su costo.

I bought every adaptor I could find and still cannot plug it in properly. Very annoyed that it even needs an adapter in the first place. Basically unusable.

I bought this product, but when I used it for the first time, it didn't work. What a waste of money. I wish the seller would give me a replacement. 😢😢